 |
| |||
| air duct | |||
| 送气管道: 15 phrases in 6 subjects |
| Aviation | 1 |
| Metallurgy | 1 |
| Racing and motorsport | 1 |
| Refrigeration | 1 |
| Steel production | 1 |
| Technology | 10 |
|
| |||
| air duct | |||
| 送气管道: 15 phrases in 6 subjects |
| Aviation | 1 |
| Metallurgy | 1 |
| Racing and motorsport | 1 |
| Refrigeration | 1 |
| Steel production | 1 |
| Technology | 10 |